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Table 1 Number and locations of ZIBs and RBs for standard test systems

From: Weak bus-constrained PMU placement for complete observability of a connected power network considering voltage stability indices

Test system Size (bus, lines) No. of ZIBs Loc. of ZIBs No. of RBs Loc. of RBs
14- bus 14,20 1 7 1 8
39- bus 39,46 11 1, 2, 5, 6, 9, 11, 13, 14, 17, 19, 22 9 30, 31, 32, 33, 34, 35, 36, 37, 38
118- bus 118,186 10 5, 9, 30, 37, 38, 63, 64, 68, 71, 81 7 10, 73, 87, 111, 112, 116, 117
300- bus 300, 411 65 4, 7, 12, 16, 18, 23, 28, 29, 30, 33, 36, 39, 40, 52, 54, 56, 57, 62, 65, 70, 71, 72, 73, 82, 94, 95, 96, 107, 108, 109, 110, 111, 112, 113, 123, 129, 130, 137, 139, 143, 144, 145, 147, 148, 153, 172, 173, 174, 189, 191, 198, 205, 216, 219, 223, 245, 246, 266, 270, 271, 272, 273, 276, 291 69 69, 150, 164, 192, 201, 206, 209, 212, 215, 218, 220, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 247, 248, 249, 250, 251, 252, 253, 254, 255, 256, 257, 258, 259, 260, 261, 262, 263, 264, 265, 275, 277, 278, 279, 280, 281, 282, 283, 284, 285, 286, 287, 288, 289, 290, 292, 293, 295, 296, 297, 298, 299, 300